Machine for rubbing or dressing stone



(No Model.)

D. MACKIE.

MACHINE EUR EUBBING 0E DRESSING STONE.

No. 898,634. Patented Feb. 26, 1889.

Egaln. PEYERS. Pham-Lixhngmvhef. waminglm. C.

UniTnn STATES PATENT Orricn.

DAYID MACKIE, OF PHILADELPHIA, PENNSYLVANIA.

MACHINE FOR RUBBlNG OR DRESSING STONE.

SPECIFICATION forming part o1n Letters Patent No. 398,634, dated February 26, 1889.

Application filed February 27, 1888. Serial No. 265,383. (No model.)

It also consists of means, substantially as described, for conveniently reversing` the stone. It also consists ol' other details, as will be hereinafter fully set forth and claimed.

Figure l represents a top or plan view ol a machine for rubbingl or d rcssing stone einbodying my invention. side elevation thereof. end view thereof. of a portion on line a: a", Fig. i?.

Similar letters of reference indicate correspending` parts in the several figures.

Referring to the drawings, A represents the frame of the machine, and l5 represents rollers mounted on the upper portion and extendin horizontally, so as to support the stone to be rubbed or dressed and present the same to the rubbing or grinding disk C, which is secured to a shaft, D, mounted horizontally on the supplemental frame A', said disk thus occupying a vertical position and beinglocatedbetwecn the frames A A', it being formed of metal, stone, or other suitable material. The shaft D receives power in any suitable man ner, and is provided in the present case with fixed and loose pulleys and a fly-wheel, for evident purposes.

To the base ot the traine A is secured a box, E, for sand, ctc., and water, the saine being located below the disk C and being open at the top, so that the peripheral portion of said disk may enter said box and revolve through the same. Connected with the disk at the Fig. 2 represents a represents an g Fig. l represents a section f Mounted on the i' rame A is a vertical screwshaft, G, which has a head, H, swiveled on its and forces the latter against the disk, so as to hold the same during' the rubbing or grinding` action of said disk.

The operation is as follows: The screw P is released and stone placed on the rollers B and moved toward the disk C, the screw IJ then being rotated, so as to lully advance thc stone and retain the end ot" the same in contact with the disk. Power is applied to the sha-ft D, whereby the disk is rotated, and as the cups or buckets F dip into the sand, water, &c., in

the box E they are supplied with such material. As the cups approach the top center, they discharge their load on the side of the disk contiguous to the stone, whereby said material is supplied to the disk and stone for properly accomplishing the rubbing' or dressing of the latter. The surplus material reenters thebox, so that itinaybe reused. Vhen one end or side of the stone is finished, the screw P is released, after which the stone is run back until it is centrally over the head I-I of the jack or screw-shaft G. The wheel M is now rotated, whereby the shaft rises and the stone is raised clear ofthe rollers B. The stone is then turned or reversed on the head H, so that the unfinished end or side of the same may be presented to the disk. The

wheel M is again rotated, so thatI the stone is lowered, and as it again rests on the rollers it is pushed toward the disk, after which the screw P is operated, whereby the stone is fully advanced to the disk and held during the subsequent rubbing or dressing;l action thereof. The arm N may be raised and lowered and turned laterally, so 'as to adjust the screw P to the height and width of the Stone and permit the stone to be reversed without interference of said screw. For this purpose said IOO the nut d, is loosened, the box may be rotated so as to turn the arm to the right or left, as the case may be. (See dotted lines, Fig. The frames A A have connected with them the braces Q, whereby they are enabled to enlllhen the bolt N3 is loosg ened, the arm mayberaised or lowered. lVhen l dure the strain due to the thrust of the stone l against the disk.

claim as new, and desire to secure by Letters Patent, is-

1. The stone rubbing or dressing disk hav ing cups or buckets connected with the periphery of the same and adapted to empty or discharge their contents over the rubbing side thereof, substantially as described.

2. A stone rubbing or dressing disk having y cups or buckets connected wit-h the periphery thereof, in combination with a feeding-box into which said buckets dip and are filled as the disk rotates, substantially as described.

3. In a stone rubbing or dressing machine,

a frame, a screw for holding the stone against a rubbing or dressing disk, and an arm supporting said screw adj ustably connected with the frame, substantially as described.

4. A stone rubbing or dressing machine having a disk, a frame with rollers thereon, a box swiveled to said frame, an arm secured in said box, and a screw working in said arm, said parts being combined substantially as described. A

5. A stone rubbing' or dressing machine l having a ru bbing-disk, a frame with rollers Having th us described my invention, what I l l l journaled therein, an arm secured to said frame, a screw working in said arm, and a lifting-screw with mechanism, substantially as described, for operating the saine, said parts 1 being combined substantially as described.

DAVID MACKIE. lVitnesses:

H. C. SHURTLEFF, JAMES KENT. 

